If this is true, then how did the levees ever survive hurricanes that have hit New Orleans in the past? I find it hard to believe that Katrina was the first Cat 3 hurricane ever to hit that part of the Gulf Coast. Or was it a case of the levees being weakened by the previous hurricanes to the point where they could no longer function to their design capacity when Katrina hit?

Vicky

Joshua,

The last time New Orleans took a hit from a hurricane there were considerably more wetlands to absorb its effects.

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